ArticleBMC cancer2026
Am80 (tamibarotene) and ATRA induce highly similar molecular responses and myeloid differentiation in non-APL AML, enhanced by LSD1/GCN5 inhibition and increased RARA expression.
Article in BMC cancer, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Who cites it
1 citing paper in PubMed.
- Revisiting retinoic acid in AML therapy: mechanisms of action and rational combination strategies.British journal of cancer · 2026Review
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18 authors.
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Abstract
backgroundAcute myeloid leukemia (AML) remains a challenging disease with a poor prognosis, necessitating more personalized therapeutic strategies. Retinoic acid receptor (RAR) activation is crucial for myeloid differentiation, but non-APL AML cells resist differentiation induced by the pan-RAR agonist all-trans retinoic acid (ATRA). Am80 (tamibarotene), a specific RARA agonist, has been reported to partially overcome this resistance in AML with high RARA expression. However, its effects on myeloid differentiation, especially in comparison to ATRA, remain understudied.
methodsIn this study we compared the effects of Am80 and ATRA in non-APL AML samples, focusing on subsets with high RARA and/or RARG expression, using molecular and phenotypic differentiation assessments.
resultsIn contrast to previous findings, Am80 showed no advantage over ATRA in inducing differentiation in AML cell lines or primary samples, regardless of RARA and RARG expression levels. Cotreatment with inhibitors of the epigenetic modifiers LSD1 and GCN5, which facilitates retinoid-induced myeloid differentiation, enhanced the effects of both Am80 and ATRA to the same extent, with more pronounced responses observed in RARA-high samples. Gene expression analysis revealed identical molecular responses to Am80 and ATRA.
conclusionsThe study provides evidence that ATRA can be substituted by the more stable Am80 in retinoid-based AML therapies. It also identifies elevated RARA expression as a potential marker for sensitivity to combination therapy with retinoids and epigenetic inhibitors in AML.
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